Planograpii co



W. A. SALTER.

PRINTING PRESS.

APPLICATION man 050.29. 1916.

Patented Oct. 28, 1919.

8 SHEETS-SHEET I.

wifi'neoo W. A. SALTER.

PRINTING PRESS.

APPLICATION FILED 050.29, 1916.

Patented Oct. 28, 1919.

8 SHEETSSHEET 2 W. A. SALTER.

PRINTING PRESS.

APPLICATION FILED 050,29, 1916.

Patentd Oct. 28, 1919.

8 SHEETSSHEET 3 w. A. SAL TER. PRINTING PRESS.

APPLICATION FILED DEC.29,19I6.

9 W 11 M mm m Q m fl QQ w J m .1. Q .2. m w v R V... I m H I w? P 1 5% 3. wHM v v \RQ mm 5% g N n M mw mm ma s Q 6 Us QPQQ 0 e Ms W mm 2 w Q a W. A. SALTER.

PRINTING PRESS.

APPLICATION man 050.29, 1916.

1,319,906. I Patented Oct. 28,1919.

8 SHEETS-SHEET 5.

m2 W 2 w a W. A. SALTER.

PRINTING PRESS.

APPLICATION FILED 050.29. 1916.

Patented Oct. 28,1919.

8 SHEETS-SHEET 6.

W. A. SALTER.

PRINTING PRESS.

APPLICATION FILED DEC.29, 1916.

1,319,906. Patented Oct. 28,1919.

8 SHEETSSHEET 7.

II II H II II II II II II II II IH [II II II N H'll II II II II II I! H H mom W01 W. A. SALTER.

PRINTING PRESS.

APPLICATION FILED DEC.29, 191s.

Patented 001;. 28, 1919.

8 SHEETS-SHEET 8.

UNITED STATS PATENT OFFICE.

WILLIAM A, SALTER, OF KANSAS CITY, MISSOURL. ASSIGNTOB: TO JOSEBI-I-D. HAVENS, OF KANSAS CITY, MISSOURI; RAYMOND M. HAVENS ADMINISTRATOR OF JOSEBH D. HAVENS, DECEASED.

PRINTING-PRESS.

Application filed December 29, 1916.

To all whom it may concern: Be it known that I, WILLIAM A. SALTER, a citizen of the United States, residing at Kansas City, in the county of Jackson and State of Missouri, have invented certain new and useful Improvements in Printin Presses, of which the fOllOWiIig is a speci cation.

This invention relates to printing presses of that class embodying a reciprocating form-carrying bed, and a revolving cylinder for making impressions, and more especially.

wherein all the pitch lines of th gearing and the sprocket drive mechanism remain in fixed relation to insure. uniformity and smoothness in the transmission of power.

Another object is to produce a press provided with means for starting the bed from a. position of rest at the ends of each of its movements to nearly full speed travel before the form-driving mechanism. takes up the work of driving the form, thereby avoiding heavy jar, shock or noise and relieving the mechanism of undue strain.

Another object. is to produce a press in which the form-carrying bed is given a long range of travel with a relatively small cylinder.

Another object is to produce a press having cams which in the advance movement of the form-carrying bed raise the ink transmitting roller from operative relation to the ink fountain and lower it upon an inking table carried by the bed and which in the reverse movement of the bed permits said transmission roller to move back to operative relation to the ink fountain.

Vith these general objects in view and others as hereinafter appear, the invention consists in certain novel and peculiar features of construction and combinations of parts as hereinafter described and claimed; and in order that it may be fully understood Specification of Letters Patent.

Serial No. 139,708;

reference is to be had to the accompanying drawings, in which Flgure 1, is a side elevation of aprinting press embodyingmy invention.

Flg. 2, is an opposite side view of the machine.

Fig. 3, is a top planview of the machine with certaininking rollers omitted.

Fig. l, is a vertical longitudinal section of the machine taken on the line.IVIV of Fig. 3'.

5, is a frontview of the machine.

Fig. 6, is a vertical section taken through one end'of'the cylinder, the form driving mechanism and one of the swing arms.

Flg. 7, is a. fragmentary vertical section taken .in the plane o-fthe inner face of the sprocket wheel driving member.

Fig. 8, is a vertical section taken through the cylinder near the opposite end from. that shown by Fig. 6, to illustrate the gripper operating mechanism.

Fig. 9, is a. detail perspective view of the cam constituting one of "the elementsof the grlpper operating mechanism.

Fig. 10, is'a frontview ofa part of one side of the framework, a rollercarriage, a form-carrying bed and the inking; carriage 1n superposed relation.

Fig. 11, is a fragmentary plan view of' the construction shown by Fig. 10, but with the inking carriage omitted.

Fig. 12, is a vertical section showing the opposite'end of the cylinder from that disclosed by Fig. 1, and the mechanism for starting the form-carrying bed on its forward travel.

Fig. 13, is a view of the mechanismshown by Fig.'12 arranged for starting the formcarrying bed on its rearward travel.

Fig. His a detail view showingthe relation between the rock shaft and one of the rock bars when the cylinder'is raised to inoperative position with respect to the form-carrying bed.

In the drawings the framework is shown as embodying the following parts; the paral lel sides-1 provided with depending supporting legs 2, and connected by heavycross bolts 3, 4, and 5 and by the front cross bar 6, and the rear cross bar 71 The sides have upward extensions -8, provided" with rearwardly and upwardly sloping arms 9 slot-' ted at 10 at their rear ends.

Forward ofthe vertical plane of cross Patented Oct. 28; 1919.

rod 4, a pair of bearing standards 11 extend upward from the sides and journaled in said bearing standards is a transverse countershaft 12.

Pivoted on the counter shaft at the outer sides of the bearing standards 11, and extending upwardly and rearwardly therefrom, are adjustable swing-arms 13, limited as to downward movement by set-screws 14 mounted in a pair of th side extensions 8.

15 are rods pivoted at their upper ends to arms 13 near the free or rear ends thereof, and extending through outwardly projecting lugs 16 of the sides 1; said rods also extending downward through rock bars 17 piroted as at 18 to lugs 19 depending from sides 1. Nuts or enlargements 20 are secured to or formed at the lower extremities of rods 15 and bear against the undersides of the rock bars 1?. Lift springs 21 fit around rods 15 and bear at their lower ends on lugs 16 and at their upper ends against pins secured to said rods. The function of these springs is to swing arms 13 upward for a purpose hereinafter explained.

To prevent accidental lifting of said swing arms 13, I provide a transverse rock shaft 23 journaled in depending lugs 24 on sides 1 and operable by a handle or lever 25 at one side of the press, pins 25 and 25 projecting from the side extensions 8 and the swing arm at the corresponding side limiting rearward and forward movements of said lever. The ends of the rock shaft 23 terminate in cams produced by flattening or cutting away the ends at one side at 26, so that when the handle or lever is swung forward the flattened sides of the rock shaft are caused to face down Ward and thus permit the springs 21 to raise the swing arms 13 and the rock bars 17 until the latter engage the flattened faces of said rock shaft, it being noted by reference to Fig. 14, that. the flattened faces of said shaft ova-lap the beveled surfaces 27 at the rear ends of the rock bars 17, so that when. the handle or lever 25 is thrown back to its original position, said rock shaft shall, by engagement with said beveled surfaces 27 readily depress and ride upward on said rocl': bars and incidentally relower the rock arms 13 through the pull applied thereon through the connecting rods 15.

A stationary transverse shaft 28 parallels the counter-shaft 12 and is mounted rigidly at its ends in the swing arms 13. Journaled on shaft 28 is a hollow impression cylinder, constructed as follows: 29 indicates the ends of the c nder. 30 the peripheral portion or platen of the cylinder, and 31 a cross bar connecting the ends of the cylinder within the peripheral plane thereof, diametrically opposite the platen portion to counter-balance the latter as well as act as a brace for the ends of the cylinder. 32 are circumferential raised portions or tracks on the platen portion of the cylinder for travel upon the tracks of the bed hereinafter referred to, so that the travel of the said tracks 32 and of the form shall be exactly the same to insure clean-cut impressions, and secured upon the exterior surface of the platen portion of the cylinder with its outer surface in the same plane as the outer surface of tracks 32 is a paper tympan 33, the same being secured at one end to a transverse rod 34 at what may be termed the front edge of the platen portion of the cylinder. At the opposite or rear edge of the platen, the tympan is carried into the cylinder and fitted in and secured to a longitudinally slotted rotatable rod 35 journaled in the ends of the cylinder, and to enable this tympan to be stretched tightly upon the platen it is provided with a wheel 37 whereby it may be turned. To hold the tympan stretched, said wheel 37 is peripherally ratchet toothed and engaged by a spring-actuated pawl 38 pivoted to the adjacent end of the cylinder as shown clearly in Fig. 4.

Arranged adjacent to and parallel with the front edge of the platen 30 and journaled in the ends of the cylinder is a rock shaft 39 provided with. gripper fingers 40 for gripping the front edge of each sheet of paper fed to the machine.

To afford means for separating and guidingeachv sheet of paper to the machine, a downwardly and forwardly inclined feed table "11 is provided, the same fitting between the side extensions 8 and being provided on the lower side thereof with a cross bar 41- terminating in trunnions for pivotal and slidable operation in slots 10. The table is provided with a pair of arms 42 which, in advance of the upper forward corners of the side extensions 8, are provided with laterally projecting pins 43 resting in the notched upper ends of a pair of upright supporting bars 44 bolted rigidly at 45 to the swing arms 13 at the outer sides thereof, it being noted by reference to Figs. 3 and that the bars 44 are bent to dispose their upper ends inward of their lower ends to accommodate the pair of arms 42 which are closer together than the outer faces of he swing arms 13.

Forward of the pins 43, the arms 42 are provided with openings 46 for the support of a transverse rock rod 47, one of the openings 46 being a. notch (see Figs. 1 and 3) so that the rod 47 may be readily removed from position. One end of the rock rod 47 is provided with a rearwardly projecting crank arm 48 pivotally connected to a lift arm 49 pivoted to an inwardly projecting portion 50 of the adjacent arm 42, the lift arm 49 occupying the vertical plane of the adjacent end 29 of the cylinder, so that once in each revolution of the latter in the direction indicated by the arrow Fig. 4, the cam portion or shoulder 51 of the said end 29 will. engageand swing the lift arm 49 upward and hence, through the crank arm 48 rock therod 47 in the direction indicated bythe adjacent arrow a, Fig. 4, for the purpose of raising certain paper guides and stops out of the path of the sheet about to be engaged by the grippers and carried around upon the cylinder.

The guide and stop mechanism operated as described, comprises a plurality of blocks 52 clamped rigidly upon rock rod 47, and rods 53 extending longitudinally of the ma chine through said blocks and secured in place by clamping nuts 53, the rear ends of said rods being flattened and widened and normally overhanging the front edge of the feed table and flaring upwardly at theirrear extremities as at 54 with respect to said table, and being provided with depending stops 55 in a vertical plane forward of the table. Said stops rest upon thin, flat and preferably resilient fingers 56, interposed between the cylinder and the tapered front extremity 56", of the table. The fingers 56 project forward from a cross late 57 secured to the underside of the ta le in keepers 58 by set screw 59, and the front GX- tremities of said fingers are engaged by stops 55 to limit downward movement of the rock bar 47 and thereby hold the lower extremity of the lift arm 49 in position to clear the reduced portion of the end of the cylinder but in the path of the cam or shoulder 51 thereof.

When the machine is in position to receive a sheet of paper, the stops 55 are in engagement with the fingers 56, the former therefore acting as a gage to limit the point to which the sheet can be advanced. After the sheet is inserted, the cylinder, driven continuously in the direction indicated by the adjacent arrow Fig. 4, brings the front edge of the platen under the projecting front ends of the fingers 56, and simultaneously the cam 51 engages the lift arm and rocks the rod 47 to raise the guides and stops out of the way. At the same moment the rock shaft equipped with the grippers is rotated rearwardly and caused to overlie the front edge of the platen at opposite sides of fingers 56 and clamp the sheet firmly upon the front edge of the tympan. The mechanism forperforming this operation is construct-' ed as follows:

60 is a small cog wheel secured on shaft 39 near one end thereof and engaged by a cog segment 61 pivoted intermediate, its length at 62, to-the adjacent end 29 of the cylinder, and provided at its opposite end with an anti-friction roller 63 adapted once in each revolution of the cylinder, to roll over a cam or lug 64'projecting from acollar 65 rigidly secured on shaft 28. The roller as it engages the earning under the rotation of the cylinder swings the segment rearward and rocksthe shaft 89 forward to withdraw the, grippers from engagement with the front edge of the platen, this action occurring shortly before said edge of the platenemerges from below the front edge of the feed table. Just before such emergence occurs the roller attains a position in front of the cam or lug and the spring 66 starts the rotation of the gripper shaft 39 and incidentally reversely rotates the segments until as the grippers engage the paper, said segment has reattained the position shown in Fig. 4. The spring 66 is shown as a coiled spring mounted upon shaft 39 near one end, and secured at one end to said shaft and at its opposite end to a plate 67 removably secured to one ehd of the cylinder and forming a journal for the adjacent end of therock shaft 39, it being noted that as the grippers engage the paper as explained, the cam 51 of the cylinder engages swing arm 49 and thereby raises the guides and stops to inoperative position.

68 is a wheel adapted to be driven by an electric motor or the like, journaled upon a stub shaft 69 projecting from the swing arm 13 at the near side of the machine in Fig. 1, and rotatable with said wheel is a gear pinion 70 (Fig. 3) meshing with a gear wheel 71 rigidly secured to the hub 72 projecting outward from the adjacent end of "the cylinderto drive the same continuously in the direction indicated by the adjacent arrow Fig. 4. The gear wheel 71 is provided with an opening 7 2 alined with the corresponding opening 73 in said adjacent end of the cylinder, see Fig. 6), the hub 72 being provided with a peripheral groove 74 registering with said openings. Mounted slidingly but incapable ofturning movement in said groove and extending parallel with the axis of the cylinder is a rectangular bolt 7 5. equipped at its opposite ends with antifriction rollers 76 and 77, for a purpose which hereinafter appears. Said bolt is also provided with an outwardly-projecting lug 78 for alternate engagement with slot 79 in the bore of a large gear wheel or driving member 80, and slot 81 in the bore of a sprocket wheel or driving member 82, said gear wheel and sprocket wheel 82 being arranged side by side and journaled on the hub 72 between-the cylinder and said gear wheel 71 (see Fig. 6).

The large gear wheel 80 meshes with a gear pinion 83 rigidly secured onv the countershaft 12. A sprocket wheel 84 rotatable with the gear pinion 88 is connected by a chain 85 with the sprocket wheel 82, and en.- gaging said chain to hold the same taut is an idler sprocket wheel 86 journaled on a stub shaft 87 adjustably secured in a slotted arm 88 projecting upward from the adjacent arm 13. It will thus be seen that the. rais- -65 the front extremities of ribs 97.

ing and lowering of shaft 28 raises and lowers the gear wheels carried by or supported from swing arms 13 and hence the cylinder without affecting the tension of the sprocket chain or the relation between the gear wheels 70 and 71 and gear wheels 80 and S3.

89 is a pair of gear wheels rigidly mounted on the counter shaft 12 for operating a reciprocatory bed resting upon longitudinally extending roller carriages running on inwardly projecting flanges or tracks 90 on the sides of the framework. The trac {S are channeled in the upper sides and receive rollers 91 journaled on pins 92 projecting ,15 from plates 93, each plate, set of pins and irollers on the pins constituting one of the roller carriages (see Figs. 10 and ill.

The reciprocatory bed comprises longitudinal plates 94: resting on the rollers and 2'0 connected by a front cross bar 95 and a rear cross bar 96, the bed being of skeleton rectangular form (see Fig. 11).

Extending upward from the plates 9% are ribs 97 provided at their outer margins with teeth 98 constituting rack bars, and at their inner margins with tracks 99, said teeth and tracks being spaced apart to provide the interposed channels 100. The rack bars as said teeth are hereinafter termed, mesh with the gear wheels 89 so that as said gear wheels turn in one direction or the other they shall impart travel in one direction or the other to the bed and of course to the roller carriage upon which the bed reciprocates with the minimum of friction.

Arranged forward of the cross bar 6 of the framework is an inking fountain which may be of any convenient form and of which only the lower part 101 is shown, said part being provided with rearwardly projecting arms 102 underlying and secured to cross bar 6, and journaled at its ends in the sides of said part 101, is a roller 103 (Fig. 1 only) which in practice will stand in the bottom 15 of the fountain and in contact with the ink therein. Contacting with said roller is a superposed roller 101 having its spindles journaled in notches 104: of the ends of the fountain. Contacting with said roller 101 is a superposed roller 105 having its spindles journaled in notches 106 in the front extremities of the sides of the framework, the bottoms of said notches occupying substantially the same plane as the top of the rack bars 98, the body of the roller 105 terminating inward of the ribs 97 so as to offer no interference to the full advance of the traveling bed.

107 is a horizontal ink table fitting between the ribs 97 of the traveling bed and provided at its sides with depending flanges 108 provided at their front ends and inner sides with notches 109 for engagement with inwardly projecting supporting pins 110 at At the rear ends said flanges of the table are provided with notches 111 for engagement with inwardly projecting supporting pins 112 of the ribs 97 of the traveling bed; said pins 112 occurring in substantially the same vertical plane as the rear edge of the cross bar 95 of said bed. At the front ends of the table 00- incidentally with the sides thereof are cams 113, which, at the proper time in the advance movement of the bed, engage the spindles of roller 105 and raise said roller above the table and then lower it upon the same to apply ink thereto, and to engage the table rearward of roller 105, when the latter rests thereon, is a pair of ink rollers 11 1115 for effecting a uniform distribution of the ink upon the surface of the table, said rollers being journaled in notches in the sides of the framework.

A reciprocatory inking carriage comprises a pair of side plates 116 fitting in the grooves or spaces 100 between the rack bars 98 and tracks 99, and a pair of transverse inking rollers 117 journaled at their ends in said side plates and provided with track wheels 118 for travel upon tracks 99.

A pair of arms 119 are pivoted to the plates 116 between the rollers and extend forwardly and upwardly therefrom, and to prevent lateral play of said arms 119 they are connected by cross rods 120 and 121. At their rear ends the arms are pivotally hooked to a cross rod 122 pivotally mounted in the upper edges of a pair of rock arms 123 pivoted at their lower ends to the outer sides of the foremost pair of the legs 2 of the framework. One of said rock arms is pivotally connected by a link 121- to the lower end of a bell crank lever 125 pivoted on the adjacent extension 8 of one of the sides of the framework and equipped at its upper end with a roller 126 fitting in a cam groove 127 formed in the outer side of the gear wheel 71. This groove, see Fig. 1, is substantially oval shape and arranged so that shortly after the grippers engage a sheet of paper and start to draw the same around the cylinder, the eccentric portion of the groove shall engage the said roller and impart pivotal movement to the bell crank lever which, through the connections described, starts the inking carriage rearwardly to cause the inking rollers thereof to apply ink to the form F, secured upon the bed rearward of and in substantially the same horizontal plane as the inking table, the form of the cam being such that the inking carriage shall reverse its direction of motion about the time the grippers attain a position in substantially the same horizontal plane as the axis of the cylinder. The parts are so proportioned that just before the grippers engage the paper the bed starts on its forward travel, at which time the inking rollers of the carriage are in engagement with the table near the front end of the same so that as the carriage moves forward said rollers receive a charge of ink from the said table and while the table is moving forward the inking carriage moves rearward as above explained and ap plies ink to the form.

From the foregoing it will be apparent that power applied to the drive wheel will through the gearing described, impart continuous rotation to the cylinder, and in order that the driving members, viz. gear wheel 80 and sprocket wheel 82 shall respectively impart forward and rearward travel to the bed, it is essential that the lug of the locking pin 75 shall interlock alternately with said wheels. Just before the front edge of the platen emerges from under the feed table, the locking pin is forced outward to dispose its lug in thesegmental slot 79 of the driving member 80, and to accomplish this result a stationary cam 128 (see Figs. 6 and 9) rigidly clamped within the cylinder uponthe shaft 28, is engaged by a roller 77 of said pin and pushes said pin outward from the slot 81 of the driving member 82 into the at this time registeringslot 79 of the driving member 80.

Uninterrupted rotation of the cylinder carries said lug forwardly in said slot for the length thereof and during this travel of the lug the driving members are at rest. As soon as the lug engages the front end of said slot it of course imparts rotation in the same direction as the cylinder to the driving member 80 and said driving member through the gear wheel 83, sprocket wheel 84, and sprocket chain 85 imparts reverse rotation to the driving member 82. This positive drive of the bed through the driving member 80 continues for nearly a half revolution of the cylinder and then the slots 79 and 81 are again brought into registration and simultaneously the roller 76 of the locking pin encounters a cam 129 (see Fig. 3) and is forced inward thereby until the lug of the locking pin enters the slot 81 of the driving member 82, the said cam 129 being shown as formed on the adjacent swing arm 13. When the lug of the locking pin enters the slot of the driving member 82 the front edge of the platen is almost in contact with the form which remains stationary until the forward travel of the cylinder carries thelug of the locking pin to the front end of the slot 81. hen this position is attained said lug causes the driving member 82 to turn with and in the same direction as the cylinder and incidentally start the bed upon its rearward travel so that the sheet of paper carried by the cylinder shall receive the impression from the form, the gearing connections between the two driving members at the same time causing back or reverse rotation of the driving member 80.

hen the cylinder has completed a revolution from the starting point hereinbefore mentioned the cam 128 is again encountered by the inner end of the locking pin and forces the same outward as the slots of the drivingvmembers reregister. All following operations are repetitions of those described.

To hold the traveling inking form rollers pressed firmly downward so as to properly engage with the table and form as they are alternately encountered, torsional springs 130 are coiledupon and secured to the cross rod 122 and bear downwardly upon the rod 121. At one end the rod 122 is provided with I around by thecylinder, from coming in contact with the counter shaft or rolls of the inking carriage, I employ a paper guard comprising a series of substantially upright fingers 133 extending downward from an arched transverse frame 134: secured to the swing arms 13. As the cylinder completes about approximately three-fourths of a revolution after gripping the sheet of paper, the front edge of its platen passes a series. of friction wheels 135 journaled on a transverse rod 136 carried by a pair of depending swing arms 137 pivoted upon inwardly projecting studs 138 of the side extensions 8, and mounted upon and secured at theirinner ends to said studs is a pair of coiled springs 139, the outer ends of the springs engaging the swing arms to hold the said friction wheels pressed forwardly so that they shall apply a yielding pressure to the paper sheet upon the cylinder and thereby cooperate with thelatter in feeding the sheetupward after its front end has been released by the grippers, stop pins 140 projecting inward from the side extensions 8 in the path of the swing arms to prevent excessive forward movement of the same when the wheels are not in engagement with the sheet upon the cylinder.

Afly for receiving each printed sheet from the cylinder and cooperatingwheels 135 comprises a rock shaft 141 journaled in the rear ends of the sides of the frame, provided with fly sticks or fingers 142 of length to extend from the rock shaft'l ll to and slightly be yond the shaft 136 upon which said wheels are mounted, and each sheet as above explained, falls upon the fly sticks or fingers and is prevented from sliding off the rear end of the same by the upturned ends 143 thereof. a Y

A spring 144 mounted upon the end 0 the rock shaft is secured at one end to the shoulder 161 also rock shaft and at the other engages the adjacent side of the frame and acts to hold the fly in the position shown in Fig. at, and to return it to such position after it has operated to deposit a sheet upon a suitable support or stack of previously printed sheets, not shown, at the rear end of the machine.

At the opposite end of the rock shaft from spring leil is mounted a small gear wheel 14:5 engaged by a rack bar 146 pivoted at its front end to an arm 14:7 pivotally suspended from. the adjacent side extension 8 rearward of the shaft 28 and in the range of action of the cam 148 of a collar 149 secured upon the adjacent hub of the cylinder, the said cam being so positioned that at the proper time it shall swing arm 1 17 rearward against the resistance of the spring 1 14 to effect the stacking of the printed sheets, as hereinbefore explained, the reaction of the spring returning the fly and pivoted arm to normal position as the said cam passes out of engagement with said arm. The same cam also in each revolution of the cylinder engages an antifriction roller 150 carried by the rock lever 151 mounted on the adjacent swing arm 13 forward of the axis of the cylinder, and said arm below its pivotal point is connected by a link 152 with a short crank shaft 153 journaled on the framework at the underside of cross bar 6 thereof and connected by a link 15st to a lever 155 journaled on the spindle of ink roller 103 of the ink fountain, said lever being provided with a spring-actuated pawl 156 engaging a ratchet wheel 157 on said spindle.

The operation of the rock lever 151 by the said cam, thus imparts intermittent rotation to the said inking roller 103, the rock lever and the pawl-carrying lever being returned to normal position by the retractile spring 158 connected at one end to the link 152 and at the other end to the framework of the machine.

Pivot-ally suspended from the upper end of the side extension 8 at the opposite end of the cylinder from the driving members is a lever 159, the lower end of the same having an opening to fit loosely over the adjacent end of the hub of the cylinder. The lower or freeend of the lever fits between a side of the framework and the adjacent rack bar of the bed and in the path of reciprocatory movement of a front shoulder 160 projecting from the side of the bed and a rear projecting from the side of the bed.

When the bed attains its most advanced position (see Fig. 13), the rear shoulder 161 has engaged the lower end of said lever and swung it forwardly until arrested by the hub of the cylinder, and at this time a earn. 162 engages a cam or roller 163 mounted on. the lever. This relation of parts is established not only at the moment the; bed attains its most advanced position but also at the moment when the driving member 80 is disengaged by the locking bolt and the lug 78 of the latter enters the slot of the driving member 82. As a. result of the engagement of the rotating cam 162 with roller 163, the lever is swung enough to overcome the inertia of the bed and start it on its rearward travel at a speed somewhat less than that at which it travels when positively driven by one of the driving members. Shortly after this starting of the bed is accomplished the lug of the locking bolt engages the front end of the slot in driving member 82 and continues the rearward movement of the bed. Just before the rearward travel of the bed is completed the front shoulder 160 thereof engages and swings the lever 159 rearward and as such rearward movement of the bed ends the locking bolt is thrown out of engagement with driving member 82 and its lug enters the slot of driving member 80. As this occurs a cam roller 164 projecting from one end of the cylinder into the opening of said lever, en-

gages the front arm of the latter and swings the same forward to overcome the inertia of the bed and start it on its forward travel, and shortly thereafter the lug of the locking bolt engages the front end of the slot of driving member when the latter takes up the work of driving the bed forwardly.

To cushion the traveling bed at the end of each reciprocatory movement thereof 1 clamp in any suitable manner to cross bar 6 and rross bar 5 respectively, the air cylinders 165 and 166, and fasten to a cross bar 167 of the bed, a rod 168 equipped at its ends with plungers 169 and 170 for respectively entering the air cylinders 165 and 166 so that the movements of the bed shall be cushioned by air trapped in said cylinders, the cylinders having air vents 171 so that no resistance shall be offered to the withdrawal movement of the plungers from their respective cylinders.

From the above description it will be apparent that I have produced a printing press which embodies the features of advantage set forth as desirable in the statement of the object of the invention, and while I have illustrated and described the preferred embodiment of the invention, it will be understood that I reserve the right to make such changes in the form, proportion, detail con struction, and arrangement of parts, as properly fall within the spirit and scope of the appended claims.

I claim:

1. In a printing press, the combination of a continuously-driven power member, a re vol ving member driven by said power memher, a pair of Wheels arranged coaXially with and journaled independently of the revolvin member and of each other, a reciprocatory bed, means operatively connected to both of said wheels for transmitting power therefrom in opposite directions to said bed, and means for alternately interlocking said revolving member with said pair of wheels.

2. In a printing press, the combination of a continuously-driven power member,- a continuously revolving member driven by said power member, a counter-shaft, a reciprocatory bed geared to the counter-shaft, a pair of Wheels arranged coaxially with and journaled independently of the revolving memher and of each other, means operatively connecting both of said wheels to the countershaft for transmitting power in opposite directions thereto, and1neans for alternately interlocking said revolving member with said pair of wheels.

3. In a printing press, the combination of a continuously-driven power member, a revolving member driven by said power member, a pair of wheels arranged coaxially with and journaled independently of the revolving member and of each other, a reciprocatory bed, means operatively connected to both of said wheels for transmitting power therefrom in opposite directions to said bed, and means carried by the revolving member for alternate y interlocking therewith said pair of wheels.

4. In a printing press, the combination of a continuously-driven power member, a revolving member driven by said'power memher, a pair of wheels arranged coaXially with and journaled independently of the re volving member and of each other, a reciproca-tory bed, means operatively connected to both of said wheels for transmitting power therefrom in opposite directions to said bed, locking means carried by the revolving member, and separate means for alternately tripping said locking means from engagement with one of said pair of wheels and into engagement with the other of said pair of wheels for respectively interlocking said wheels with said revolving member.

5. In a printing press, the combination of a continuously-driven power member, a continously revolving member driven by said power member, a countershaft, a reciprocatory bed geared to the counter-shaft, a pair of wheels arranged coaxially with and journaled independently of the revolving member and of each other, means operatively connecting both of said wheels to the counter-shaft for transmitting power in opposite directions thereto, and means carried by the revolving member for alternately interlocking therewith said pair of wheels.

6. In a pI'iIlt-il'lg press, the combination of a continuously-driven power member, a revolving member driven by said power member, a pair of wheels arranged coaXially with and journaled independently of the revolving member and of each other, a reciprocatory bed, means operatively connected to 7. In a rintin aress the combination of a continuously-driven power member, a continuously revolving member driven by said power member, a counter-shaft, a reciprocatory bed geared to the counter-shaft, a pair of wheels arranged coaXially with and journaled independently of the revolving mem ber and of each other, means operatively connecting both of said wheels to the counter-shaft for transmitting power in opposite directions thereto, means for alternately interlocking said revolving member with said pair of wheels, and means actuated by the revolving member for gradually starting and for gradually ending each reciprocatory movement of the bed, in the interim between the interlocking of said pair of wheels with the said revolving member.

8; In a printing press, the combination of a continuously-driving power member, a continuously revolving member driven by said power member, a counter-shaft, a reciprocatory bed geared to the counter-shaft, a. pair of wheels arranged coaxially with and journaledindependently of the revolving member and of each other, connecting means between said wheels and turning the same simultaneously in opposite directions, means operatively connecting both of said wheels to said counter-shaft for transmitting power in opposite directions to the latter, and means for alternately interlocking said revolving member with said pair of wheels.

9. In a printing press, the combination of continuously revolving member, a reciprocatory bed, a counter-shaft geared to said bed, a pair of driving members geared to the countershaft to revolve the same in opposite directions to effect reciprocating movement of the bed, a laterally movable locking bolt carried by the revolving member, means for actuating said bolt in one direction to interlock one of the driving members with the revolving member to effect the travel of the bed in one direction, and means for reversing the movement of the bolt to disengage said driving member from the revolving member to interlock the other driving member with the revolving member to efiect reverse movement of the bed.

10. In a printing press, the combination of a continuously revolving member, a re ciprocatory bed, a counter-shaft geared to said bed, a pair of driving members geared to the counter-shaft to revolve the same in opposite directions to efiect reciprocating movement of the bed, a. laterally movable locking pin carried by the cylinder, means for actuating said bolt in one direction to interlock one of the driving members with the revolving member to effect the travel of the bed in one direction, means for reversing the movement of the bolt to disengage said driving member from the revolving member and interlock the other driving member with the revolving member to effect reverse movement of the bed, and means for starting the bed on each of its movements in the interim between the unlocking of each of said driving members and the interlocking of the other driving member with the re volving member.

11. In a printing press the combination of a continuously revolving member, a reciprocatory bed, a counter shaft geared to said bed, a pair of driving members geared to the counter-shaft to revolve the same in opposite directions to effect reciprocating movement of the bed, a laterally movable locking pin carried by the cylinder, means for actuating said bolt in one direction to interlock one of the driving members with the revolving member to effect the travel of the bed in one direction, means for reversing the movement of the bolt to disengage said driving member from the revolving member to interlock the other driving memher with the revolving member to eiiect reverse movement of the bed, and means actuated by the revolving member for starting the bed on each of its movements in the interim between the unlocking of each of said driving meniibers and the interlocking of the other driving member with the revolving member.

12. In a printing press, the combination of a ower member, a member continuously revolved by said power member, a bed, a counter shaft geared to said bed, a gear wheel journaled around the axis of the revolved member and provided with a slot eX- tending concentrically of its axis, and cooperatively connected to the counter-shaft to drive the same in one direction, a sprocket wheel journaled around the axis of the revolved member and provided with a slot extending concentrically of its axis and cooperatively connected to the counter shaft to revolve the same in the opposite direction, locking means carried by the revolved member, and separate means for alternately engaging said locking means with the slots of said gear wheel and sprocket wheel.

In testimony whereof, I aflix my signature, in the presence of two witnesses.

H. C. Ronenns, DENIS J. DOWNEY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. t 

